Drug interactions
Chlorpromazine + Dimenhydrinate
Severity: Moderate
Chlorpromazine and Dimenhydrinate: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Dimenhydrinate contains diphenhydramine, a sedating anticholinergic antihistamine. With chlorpromazine, drowsiness and anticholinergic effects such as confusion, dry mouth and urinary retention may be additive.
What this interaction means in plain words
Chlorpromazine and Dimenhydrinate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Chlorpromazine belongs to Central Nervous System; Dimenhydrinate belongs to Respiratory.
Why it happens
Additive H1 blockade, CNS depression and muscarinic antagonism.
What to do
Avoid in older adults where possible and warn about driving. Monitor for sedation and anticholinergic symptoms.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Chlorpromazine
- Chlorpromazine + Dofetilide Contraindicated
- Chlorpromazine + Dronedarone Contraindicated
- Chlorpromazine + Droperidol Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Chlorpromazine + Metrizamide Contraindicated
- Chlorpromazine + Panobinostat Contraindicated
Other interactions of Dimenhydrinate
Frequently asked questions
Can I take Chlorpromazine with Dimenhydrinate?
MediHelp rates the interaction as moderate. Chlorpromazine and Dimenhydrinate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dimenhydrinate contains diphenhydramine, a sedating anticholinergic antihistamine. With chlorpromazine, drowsiness and anticholinergic effects such as confusion, dry mouth and urinary retention may be additive.
How serious is the interaction between Chlorpromazine and Dimenhydrinate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid in older adults where possible and warn about driving. Monitor for sedation and anticholinergic symptoms.
What other medicines interact with Chlorpromazine?
MediHelp also lists interactions of Chlorpromazine with, for example, Dofetilide, Dronedarone, Droperidol. The full list is on the Chlorpromazine page.
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